12304531221 has 8 divisors (see below), whose sum is σ = 16429184160. Its totient is φ = 8191449552.

The previous prime is 12304531207. The next prime is 12304531223. The reversal of 12304531221 is 12213540321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12304531221 - 2⁷ = 12304531093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12304531191 and 12304531200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12304531223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2890335 + ... + 2894588.

It is an arithmetic number, because the mean of its divisors is an integer number (2053648020).

Almost surely, 2^12304531221 is an apocalyptic number.

It is an amenable number.

12304531221 is a deficient number, since it is larger than the sum of its proper divisors (4124652939).

12304531221 is an equidigital number, since it uses as much as digits as its factorization.

12304531221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5785635.

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 12304531221 in words is "twelve billion, three hundred four million, five hundred thirty-one thousand, two hundred twenty-one".